The new Orochi stands a massive 155mm tall and 120mm wide and that's before you install the fan! This may cause issues regarding compatibility with certain cases, but if your case is wider than 190mm this should not be a problem. The Orochi incorporates ten 6mm diameter heatpipes which transfer the heat away from the CPU and onto the cooling fins. The cooling fins are spaced wide apart, to not only reduce the overall weight of the cooler but to also allow the heatsink to be used without a fan. This does depend on the airflow through your case and the CPU type you are using. The Orochi has been designed for one purpose alone and that is to cool any current CPU in virtual silence. The supplied 140mm fan only produces a noise level of 11dBA. The above is great news if you want total silence, but what if you want more performance rather than noise reduction? Well, what's special about the 140mm fan is that its mounting holes are the same as a 120mm fan. This make it is possible to use any 120mm fan with the Orochi heatsink.